Trolley.



P ATBNTBD MAY 7, 1907. A. J. RBIF a; A. L. MOQORMIGK.

TROLLEY.

APPLIGATION FILED JUNE 2. 190e.

g ALFRED J. REIF,

OF ALLEGIENY, AND ALBERT L. MCCORMICK, OF

KN OXVILLE, PENNSYLVANIA.

TROLLEY.

Specification of Letters Patent.

Patented May 7, 1907.

Application filed June 2, 1906. Serial No. 319,924.

To all whom, it may concern:

Be it known that we, ALFRED J. Rini" and ALBERT L. MoCoRMroK, citizensof the United States of America, residing at Allegheny and Knoxville, inthe county of Allegheny and State of Pennsylvania, have invented certainnew and useful Improvements in Trolleys, of which the following' is aspecification, reference being had therein to the accompanying drawings.1

This invention relates to certain new and useful improvements inattachments for trolley-harps, and the invention has for its main objectto provide a simple and inexpensive attachment which will prevent atrolley wheel carried by said harp from being displaced from itstrolley-wire or electrical conductor, during the operation of trolleydevice.

The invention further aims to provide a durable and eflicient attachmentthat can be used upon the ordinary harp by simply lengthening the pinthereof, thus permitting of my improved attachment being economicallyused -without incurring any perceptible additional expense, whenequipping a car system with said attachments.

The attachment is constructed to prevent a trolley-wheel from beingdisplaced from a trolley-wire by irregularities' in the wire, sharpcurves, cross-overs, or trolley wire hangers or supports, the attachmentreceding at each hanger or cross-over and preventing the same from beinginjured or broken by the attachment.

The detailed construction of the attachment will be hereinafter morefully described and then specifically pointed out in the claims.

Referring to the drawing forming part of this speciiication, likenumerals of reference designate corresponding parts throughout theseveral views, in which Figure 1 is an end view of my improvedattachment as applied to a trolley-harp, Fig. 2 is a side elevation ofthe same, Fig. 3 is a plan of the attachment, Eig. 4 is a side elevationof one of the arms of the attachment, and

Fig. 5 is a perspective view of the same.

In the accompanying drawing, we have illustrated a conventional form oftrolleyharp 1 having a pin 2 mounted transversely thereof, and upon saidpin is journaled a trolley-wheel 3. The ends of the pin 2 protrudebeyond the side arms 4 of the harp 1 and are threaded to receive nuts 5,and pierced to receive Cotter-pin 6 to yprevent accidental displacementof the nuts.

Our invention resides in providing the ends of the pin 2 with movablelever arms 7, said arms being slotted, as at 8, to permit of said leversbeing rocked upon the pin 2 and the side arms 4 of the harp 1. The innerfaces of the lever arms 7 at the sides of the slots are provided withbearing -lugs 9, which engage the side arms 4 of the harp 1 and serve as-fulcrums for the movable lever arms 7. The inner faces of the nuts 5are rounded, as at 10, to form a bearing for the levers when rocked uponthe pin 2.

The levers 7 have their upper ends bent inwardly over the harp 1 andwheel 2 into close proximity to one another, to form incline recesses toprevent the trolley-wire 11 from being displaced from the groove of saidwheel. The inwardly bent ends 12 of said arms are beveled, as at 14,spaced apart to allow a hanger or wire support to pass between the endsof said arms.

The lower ends of the lever arms 7 are bent outwardly and curvedrearwardly, as at 15, and have their extreme ends connected by links 16,to which is fastened a trolley-rope 17 commonly employed for removing atrolley wheel from its wire.

The lower ends of the lever arms 7 above thelinls 16 are connectedtogether by a pin 18 which passes through slots 19 formed in saidlevers; nuts 20 retaining said pin between said levers. Surrounding thepin 18 is a spring 21 which holds the lever arms 7 against the nuts 20,the upper ends of said levers contiguous to one another, and the links16 in longitudinal alinement:

It is apparent that when the trolley-rope 17, is pulled downwardly, thelever arms 7 will have their upper ends separated allowing thetrolley-wheel to be removed from the wire, and upon the rope 17 beingreleased, the spring 21, which has been` under tension, will immediatelyreturn the lever arms 7 to their normal position.

Our attachment is constructed of strong and durable metal, and suchchanges in the size and minor details ofA construction as arepermissible by the appended claims, may be resorted to without departingfrom the spirit and scope of the invention.

What we claim and desire to seoure by Letters Patent, is

The combination with a trolley harp having spaced side arms, ofv a pinextending transversely through said arms and projeoting beyond the sameand provided with threaded ends, nuts on said threaded ends of the pinhaving rounded inner faces, a trolley wheel journaled upon said pinbetween said harp arms, lever arms swinging upon said pin between thearms of the harp and the nuts on said pin, and provided on their innerfaces with curved lugs bearing against the adjacent sides of the harparms,- with their outer faces bearing upon the rounded faces of saidnuts, said lever-arms extending inwardly and downwardly at their upperends within the channel of the trolley wheel, a tierod extending throughsaid lever-arms, a spring on said tie-rod operating to maintain saidlever-arms yieldably in distended position at their lower ends, linksconnecting the lever-arms together adjacent their lower ends, and a rodconnected to said links Jor operating the lever-arms to distend theirupper ends.

In testimony whereof we affix our signatures in the presence of twowitnesses:

ALFRED J. REIF. ALBERT L. MCCORMICK.

Witnesses:

MAX H. SRoLovrrz, E. E. POTTER.

